Inaccurate dating of the pregnancy

For example if you a tiny sac can be seen in the uterus, but the baby and its heart beat may not be detected yet.

5 ½ weeks gestation means 5 ½ weeks from the first day of the last menstrual period, which is usually about 3 ½ weeks from the date of conception (confusing, isn’t it!

People don't always ovulate at the same times.

I didn't have sex after January started yet the doctors say I'm 14 weeks and the baby is measuring 14 weeks.

thought heart rate was low at 87 bpm, and went back 3 days later for another ultra sound, they said the embryo was 5.5 weeks and hadn't developed a heart beat yet.

And in the meantime, this is very stressful, wish we would not scan until 8-9 weeks to be really certain, science vs nature..can't be sure, only time can tell, but waiting is a killer when doctors raise alarm.

Go by whichever date is soonest, yours or the ultrasound. My sister gave birth to her son a full month after her due date (via induction) and both her and the baby were perfect and healthy. Based on this along with the forty weeks I should expect my due date to be November 7, but they insist that it's December 3rd based on the measurements of the ultrasound. I previously have had two c-sections so I can't just sit and wait to deliver vaginally bc that could be a fatal situation for me and my baby.

For transvaginal ultrasound you can have an empty bladder Dating scans are usually recommended if there is doubt about the validity of the last menstrual period.Now I am feeling like is it a miscarriage about to happen?Pregnancy dating by ultrasound can be difficult for mom's.After the ultrasound, they told me I am 7 weeks 0 days.I don't know what to believe because my periods were out of wack.

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